N2 - To determine speech intelligibility using the test suggested by Ozimek et
al. (2009), the subject composed sentences with the words presented on a
computer screen. However, the number and the type of these words were
chosen arbitrarily. The subject was always presented with 18, similarly
sounding words. Therefore, the aim of this study was to determine whether
the number and the type of alternative words used by Ozimek et al. (2009),
had a significant influence on the speech intelligibility. The aim was
also to determine an optimal number of alternative words: i.e., the number
that did not affect the speech reception threshold (SRT) and not unduly
lengthened the duration of the test. The study conducted using a group of
10 subjects with normal hearing showed that an increase in the number of
words to choose from 12 to 30 increased the speech intelligibility by
about 0.3 dB/6 words. The use of paronyms as alternative words as opposed
to random words, leads to an increase in the speech intelligibility by
about 0.6 dB, which is equivalent to a decrease in intelligibility by 15
percentage points. Enlarging the number of words to choose from, and
switching alternative words to paronyms, led to an increase in response
time from approximately 11 to 16 s. It seems that the use of paronyms as
alternative words as well as using 12 or 18 words to choose from is the
best choice when using the Polish Sentence Test (PST).
JO - Archives of Acoustics
L1 - http://sd.czasopisma.pan.pl/Content/101366/PDF/06_paper.pdf
L2 - http://sd.czasopisma.pan.pl/Content/101366
IS - No 1
EP - 50
KW - speech intelligibility
KW - speech test
KW - speech reception threshold
ER -
A1 - Krenz, Magdalena
A1 - Wicher, Andrzej
A1 - Sęk, Aleksander
PB - Committee on Acoustics PAS, PAS Institute of Fundamental Technological Research, Polish Acoustical Society
VL - vol. 40
JF - Archives of Acoustics
SP - 41
T1 - The Influence of the Semantic Material on the Assessment of Speech Reception Threshold
UR - http://sd.czasopisma.pan.pl/dlibra/docmetadata?id=101366
DOI - 10.1515/aoa-2015-0006